#include <stdio.h>
int main()
{
    int num1 = 100;
    int num2 = 200;
//局部变量初始值为随机值
//全局变量初始值为0
    int r = num1 + num2;
    printf("%d\n", r);
    int b = num2 / num1;
    printf("%d\n", b);
    int a = num1 * num2;
    printf("%d\n", a);
    int c = num2 % num1;
    printf("%d\n", c);
    return 0;
}